Pettit FlexPoxy Repair Compound is a two-part epoxy resin that does not run, sag, or shrink. FlexPoxy's thick formula can fill large cavities in just one application and is good for filling, filleting, forming, fairing, and fastening. Creates a heavy-duty bond to all epoxies, polyester resins, metals, and woods. The compound remains flexible after being cured, working particularly well for keel joint repairs. FlexPoxy has a low-odor formula safe for use above and below the waterline. Easy to mold and shape during application as well as tinted and overcoated by most paints.